JP2001280044A - Obstacle detector in building shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an obstacle detector which improves the detection sensitivity to an obstacle and is excellent in maintenance such as change of a transmitter and a switch. SOLUTION: This obstacle detector comprises a transmitting means 3 to transmit an obstacle detection signal, an obstacle detecting means which is fitted to a lower end of a shutter curtain and moved upward as the obstacles is abutted thereon, and a plurality of switching means 6 (6a, 6b, 6c) to switch on/switch off the transmitting means based on the upward movement of the obstacle detecting means, and each switching means is electrically connected by wires.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an obstacle for an architectural shutter provided with a transmitter for transmitting an obstacle detection signal based on the fact that the lower end of a shutter curtain has come into contact with an obstacle during a shutter lowering operation. The present invention relates to an object detection device.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 7, an obstacle detecting device for an electric shutter for construction uses an obstacle detecting section for detecting that the lower end of the shutter has come into contact with an obstacle, and a detecting section for detecting the obstacle. And a shutter control unit that stops the drive motor based on the input of the detection signal output from the transmitter.

Usually, a movable seat plate 2 divided into upper and lower parts is used as an obstacle detecting unit. The movable seat plate 2 has a lower seat plate 22 (movable seat plate) and an upper seat plate (fixed seat plate) 2.
1, the movable seat plate 22 is pushed upward when an obstacle comes into contact with the lower end of the shutter curtain. The obstacle detection signal transmitter 3 has a transmission circuit for transmitting an obstacle detection signal and a battery serving as a power supply therein, and detects the object toward an obstacle detection signal receiver mounted near the shutter magsa. It is attached to the upper surface of the fixed seat plate 21 so that signals can be transmitted.

The movable seat plate 22 is provided on the lower surface of the fixed seat plate 21.
A switch mechanism for turning on the transmission circuit of the obstacle detection signal transmitter 3 based on the upward movement is attached.
The switch mechanism includes a micro switch MS connected to a transmission circuit of the obstacle detection signal transmitter 3, and an operation lever PL for turning on / off the micro switch MS. A plurality of auxiliary levers SL are connected to the lower surface of the fixed seat plate 21 via wires W in parallel with the operation lever PL, so that they can rotate integrally. By interlocking and linking the plurality of auxiliary levers SL as described above, the detection range of the operation lever PL is expanded, and more reliable detection is performed.

[0005] In the obstacle detecting device configured as described above, when an obstacle contacts the lower end of the shutter curtain,
The movable seat plate 22 is pushed upward, and the operation lever PL and the auxiliary lever SL are turned in the direction of the arrow to turn on the micro switch MS. The transmission circuit of the obstacle detection signal transmitter 3 is turned on based on the ON operation of the micro switch.
When activated, a detection signal is transmitted from the obstacle detection signal transmitter 3 to the obstacle detection signal receiver, and the input of the detection signal causes the shutter control unit to stop the lowering of the shutter or to perform operations such as reversing and raising. It has become.

[0006]

However, according to the above-mentioned prior art, there is a fear that the wire connecting the operating lever PL and the auxiliary lever SL may be cut due to long-term use.
Further, in this case, since the switch mechanism, the operating lever and the like are built in the seat plate, the maintenance work is very complicated.

[0007]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention has been made to solve these problems, and the present invention has been made to solve the above problem, and the lower end of the shutter curtain has come into contact with an obstacle. Detecting means for detecting an obstacle, transmitting means having a transmitting circuit for transmitting an obstacle detecting signal, and ON / O based on the detection of the obstacle detecting means.
A switch circuit composed of a plurality of switch groups for switching FFs, and the switch circuit is connected to the transmission circuit of the transmission means. Can be
Mounting work and maintenance work can be facilitated.

[0008] Since the adjacent switches in the switch group are connected via a detachable connector, maintenance for replacing the switches can be easily performed.

[0009] Since the switch circuit and the transmission circuit are connected via a detachable connector, maintenance of replacement of the transmitter can be easily performed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic view of an electric shutter, 1 is a shutter curtain that opens and closes an opening by forward and reverse rotation of a drive motor, 2 is a movable seat plate attached to a bottom slat of the shutter curtain 1, Is an obstacle detection signal transmitter that transmits an obstacle detection signal based on the detection of an obstacle; 4 is an obstacle detection signal receiver that receives a detection signal from the obstacle detection signal transmitter 3; The shutter control unit issues a command to rotate or stop the drive motor forward or backward based on a signal input from the device. Other guide rails,
Although equipped with various devices and parts such as a winding shaft,
These are the same as known electric shutters, and will not be described.

The movable seat plate 2 includes an upper fixed seat plate 21 and a lower movable seat plate 22. The fixed seat plate 21 is connected to the bottom slat of the shutter curtain 1, while the movable seat plate 22 is suspended from the fixed seat plate 21 so as to be movable upward.

An obstacle detection signal transmitter 3 is mounted on the upper surface of the fixed seat plate 21. The obstacle detection signal transmitter 3 is provided in a casing 31 formed of a synthetic resin.
A signal transmission circuit for transmitting a signal based on detection of an obstacle and a power supply circuit including a battery device such as a dry battery or a storage battery are built in. Note that the form of the detection signal may be appropriately selected from a radio wave type and an optical type, and may be any as long as it does not depart from the gist of the present invention.

The obstacle detection signal receiver 4 is mounted near the shutter magsa, receives the detection signal from the obstacle detection signal transmitter 3, and is connected to the shutter control unit 5 so as to be able to output the detection signal. ing. The shutter control unit 5 rotates and stops the drive motor forward and backward based on an operation signal from an operation switch and a detection signal input from the obstacle detection signal receiver 4.

Reference numeral 6 denotes a switch for turning on the obstacle detection signal transmitter 3. A plurality of switches 6 are mounted on the upper surface of the fixed seat plate 21 at predetermined intervals. The switch units 6a, 6b, 6c are provided with micro switches MS1, MS2, MS3, respectively, and adjacent switch units are electrically connected by a lead wire and a detachable connector C. In addition, the connection between the obstacle detection signal transmitter 3 and the switch unit 6 adjacent thereto is also made by a lead wire and a connector C.

FIG. 5 is a circuit diagram of the obstacle detection signal transmitter 3 and the switch unit 6. The obstacle detection signal transmitter 3 includes a microswitch MS of the switch units 6a, 6b, 6c.
1, MS2 and MS3 are connected in parallel. Therefore, any one of the switches 6a to 6c is
When N is activated, the transmission circuit of the obstacle detection signal transmitter 3 becomes O
N operation is performed and an obstacle detection signal is transmitted.

The internal structure of the switch section 6 will be described with reference to FIG. Reference numeral 61 denotes a casing formed of a resin or the like. In the casing 61, a switch pressing mechanism including a switch pressing body 62, a coil spring S, an operating pin 64, and a microswitch MS are incorporated. The switch pressing body 62 is made of a synthetic resin molded product, both ends of which are supported by guide grooves 63 formed in the casing 61, and a coil spring S
Is attached and constantly urged downward. The operating pin 64 is a bent member having upper and lower rotating arms 64a and 64b, and the operating pin 64 is attached by a pivot 66 so as to be swingable about a bent portion 64c.

The microswitch MS is fixed below the switch pressing member 62, and the actuator is constantly pressed by the switch pressing member 62 urged downward by the coil spring S. By the way,
Since the microswitch MS uses a normally closed contact (b contact), the contact is opened and de-energized when the actuator is pressed, but closes when the actuator is released. To turn on the transmission circuit of the transmitter. In the switch mechanism of the present embodiment, the actuator is always pressed. However, the present invention is not limited to this. It doesn't hurt at all. (In this case, the microswitch MS employs a normally open contact.)

Next, a method of mounting the switch section 6 will be described with reference to FIG. The switch portion 6 is fixed to the upper surface of the fixed seat plate 21, and a plurality of insertion holes 21a are formed at predetermined intervals in the upper surface of the fixed seat plate. After the operation pin 64 projecting from the lower surface of the switch section 6 is inserted into the insertion hole 21a, the screw B is fixed to the flange section 61a formed on the casing by screwing. Similarly, after each switch section 6 is attached to the fixed seat plate, the connectors are connected by fitting the connectors C of the adjacent switch sections. Although the lead wires L and the connectors C connecting the respective switch sections 6 are exposed, they may be covered with a detachable molding as necessary.

The operation of the obstacle detecting device according to the embodiment of the present invention will be described with reference to FIG. First, when the operation switch is closed, the shutter curtain 1 starts a downward operation from above to below. When an obstacle comes in contact with the lower end of the shutter curtain 1 during the lowering operation of the shutter, the movable seat plate 22 is pushed upward by the obstacle, and the operating pin 64 in contact with the upper surface of the movable seat plate is rotated. . When the operating pin 64 rotates, the rotating arm 64a moves the switch pressing body 62 positioned above upward (in the direction of the arrow) against the bias of the coil spring S. The upward movement of the switch pressing body 62 causes the microswitch M
The pressing of the actuator of S is released, and the contact is closed to turn on the transmission circuit of the obstacle detection signal transmitter 3. The detection signal is received by the obstacle detection signal receiver 4 and is output to the shutter control unit 5 so that the shutter curtain 1 performs an operation such as stopping or reversing and rising.

FIG. 6 shows another connection form between the obstacle detection signal transmitter 3 and the switch unit 6. In this embodiment, switch units 6 are connected to the left and right of the transmitter 3. Therefore, a lead L and a connector C connected to the switches 6 and 6 are attached to the transmitter 3 respectively. The other configuration is the same as that of the above-described embodiment, and will not be described.

[Brief description of the drawings]

FIG. 1 is a schematic view of an electric shutter.

FIG. 2A is a side view of a seat plate portion. (B) is an inside view of a seat plate part.

FIG. 3 is an inside view of a switch unit.

FIG. 4 is a perspective view illustrating a method of attaching a switch unit.

FIG. 5 is a circuit diagram of a switch unit and a transmitter.

FIG. 6 is a front view showing another connection state between the switch unit and the transmitter.

FIG. 7 is a front view illustrating a conventional obstacle detection device.

[Explanation of symbols]

 1 Shutter curtain 2 Movable seat 21 Upper seat (fixed) 22 Lower seat (movable) 3 Obstacle detection signal transmitter 4 Obstacle detection signal receiver 5 Shutter controller 6 Switch C connector

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E042 AA01 BA00 CA01 CA15 CB01 CB02 CB05 CB06 CC00 CC03 DA01

Claims (3)

[Claims] 1. An obstacle detecting means for detecting that a lower end of a shutter curtain has come into contact with an obstacle; a transmitting means having a transmitting circuit for transmitting an obstacle detecting signal; A switch circuit comprising a plurality of switch groups for switching ON / OFF, and the switch circuit is connected to a transmission circuit of the transmission means, and the obstacle detection of the architectural shutter is performed. apparatus. 2. The obstacle detecting device for a building shutter according to claim 1, wherein adjacent switches of the switch group are connected via a detachable connector. 3. The apparatus according to claim 1, wherein the switch circuit and the transmission circuit are connected via a detachable connector.